Padlock.



E. J. SHIPIVIAN.

PADLOCK.

APPLICATION FILED MAR- 31. 1914-. 1,168,340, Patented Jan. 18, 1916.

4 2 SHEETS-SHEET 2- WITNESSES:

Tm: COLUMBIA PLANOORAPH co., WASHINGTON. D. c.

Z '0 all whom it may concern TE srrns rnwr anion.

EVAN SHIPMAN, OF NEW HAVEN, CONNECTICUT, ASSIGNOR T SARGENT & COMPANY, OF NEW HAVEN, CONNECTICUT, A. CORPORATION OF CONNECTICUT.

' PADLOCK.

-' Be it known that I, EVAN J. SHI1 MAN, a citizen of the United States, residin in the city and county of New Haven and S tate of Connecticut, have invented certain new and useful Improvements in Padlocks, of which the following is a full, clear, and exact description.

This invention relates to padlocks, and more particularly to padlocks provided with mechanism for registering the number of times the padlock is actuated.

The invention relates more especially to padlocks of the sliding shackle type, and to those wherein the shackle is locked and released by pin tumbler lock mechanism, but certain features of the invention may be used to advantage in padlocks of other kinds.

In a co-pending application, filed on even date herewith, Serial No. 828,516, I have described an improved type of registering padlock in which the registering mechanism is directly actuated by the shackle, and more particularly. by a closing or looking movement of the shackle. The present invention refers especially to improvements in the form, arrangement, and location of the registering mechanism, whereby the construction of the padlock is considerably simplified, and at the same time, its range of utilityis largely increased. It is aimed to provide a padlock having registering mechanism which will register a very large number of actuations, but which, nevertheless, occupies very little space and facilitates compact, reliable construction, and eflicient operation. To these and other ends, the invention consists in the novel features and combinations of parts to be hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a front elevation of a padlock embodying my improvements, with the shackle open. Fig. 2 is a similar view with the shackle closed, and the cover for the registering mechanism omitted, the padlock case being partly broken away. Fig. 3 is an end elevation of the padlock. Fig. 4 is a bottom view of thepadlock, Fig. 5 is a section on line 5-5 of Fig. 3, looking in the direction of the arrows. Fig. 6 is a section on line 6-6 of Fig; 1, looking in the direction of the arrows, Fig. 7 is a similar section,

Specification of Letters Patent.

Patented Jan. 18, 1916.

, Application filed 'March31, 1914. Serial No. 828,517.

showing the padlock in its closed position. Fig. 8 is a detail section on line 88 of Fig. 1, looking in the direction of the arrows. Fig. 9 is a rear elevation of the cover for the registering mechanism. Fig. 10 is a top view of such cover. Figs. 11 and 12 are detail front and end views respectively OI the registering counter, and Fig. 13 is a detail of the pin tumbler lock mechanism showing the seat for the registering counter.

Referring to the drawings, I have shown my improvements as applied to a padlock of the general type set forth in Patent No. 729,792, granted to Sargent & Company, on June 2nd, 1903, as assignee of Albert A. Page. This padlock comprises a case 20, a shackle 21 having a long leg 22 and a short leg 23, a pin tumbler lock 24, including a key plug 25 rotatable in the face plate, or bottom plate 26, and an operator 27 on the plug adapted to actuate a locking dog or bolt 28 arranged to lock and release the shackle 21. I wish to have it understood, however, that my invention is not limited to padlocks of this type.

Mounted on the front of the pin tumbler lock mechanism 24 is a self-contained registering counter, having a casing, registering devices therein, and outwardly projecting means whereby said devices may be actuated. The registering counter will preferably be of the type shown in Patent No. 634,073, granted October 3rd, 1899, to G. H. Veeder. The face plate or end plate 26, which incloses the lock mechanism in the padlock case or shell also holds the registering mechanism in the case -or shell, said mechanism being interposed between the lock mechanism and aside wall of the case, preferably in the manner hereinafter described. In the form shown, the case 29 of the registering counter 30 is provided with a base 31, comprising a flat plate adapted to fit against a fiat portion 32 on the pin tumbler lock mechanism. Atxone side of the base 31 is a lug 33, adapted to engage a notch 34 in the case of the pintumbler lock '(Fig. 13). The face plate 26 projects laterally beyond the portion32 so as to form a support for the base 31 of the registering counter, whereby said counter is supported from beneath by the face plate and held in the proper position in the enlarged portion of the padlock ca or s l w h is pr vi dr e wshown, the registering mechanism includes five number wheels, visible'through a sight plane parallel to the plane of the. shackle when locked. ,The shaft 36 is in front of,

and'at'right' angles to, the longer leg 22 of the shackle. 1; .1

The counter is held in place relatively .to' the lock mechanism by a cover '37 fitting over, and conformingto the case 29 of said counter, as 'shownin 'Figsj6 and 7.- The cover 37 is attached to the front wall of the padlock, and projects forwardly therefrom, and is provided with a sight opening38 in line with the sight opening of the registering counter. In this way, the cover' 37 i'ncloses and protects the counter, and holds it in position, while at the same time permitting the number wheels of the counter to be visible at the frontof the padlock. The cover 37 has top and bottom walls 37*, end walls 37, and a marginal flange 39 extending around the open rear portion of the cover. The counter 30 extends forwardly through a suitable recess in the main wall of the pad lock case, to the edge portions of which recess the open rear portion of the cover 37 is suitably secured.

' In the form shown, the flange 39 on the cover 37 is provided with grooved side portions 39 fitting over and slidably interlocked with the side edges 39, 39 of the cutaway portion or recess of the case or shell 20. In this manner, the cover 37, when placed on the pin tumbler look, over the counter 30, may be slid into place to cover the opening in the front wall of the padlock case, as the lock is moved into said case. When the parts are in the assembled position shown in Fig. 1, the upper portion of the flange 39 extends beyond the upper edge of the recess in the case wall, and the displacement of the cover 37 relative to the case of the padlock is prevented by the face plate, or bottom plate 26, which overlies the lower part of the flange 39 to a' certain extent, as shown in Fig. 4. Hence, when the pin tumbler lock mechanism 24 is secured the padlock case, by means of the screw 40 (Fig. 5'), the removal of the cover 37 is absolutely prevented.

In the form shown, the registering counter is actuated by a member operated from the longer leg 22 of the shackle, as set forth in my co-pen'ding application above mentioned. The leg 22 of the shackle is" slidable in a socket 41, and is provided within said socket with a shoulder 42. A ring 43 surrounds the reduced lower end 44' of the leg 22' bef neath' the shoulder 42, and carries a pin 45 for' actuating the registering mechanism. A

spring 46 for projecting the shackle when it released is" housed inthe socket 41, and is actsat its upper end against the lower face of the ring 43, whereby said ring 1sconfined betweenthe springi46 andj' houlder 42. In opening 35 in the case 29, and 'mtatable about a shaft or arbor 36 arranged ina thisway, the pin '45'p'artak'es of the movernent of the shackle in a downward direction, and also in an upward direction. The

pin 45 is. guided rectilinearly in a slot 47,

-' men tof theshac'kle leg with the ring 43, the

shackle may turn independently of the pin, as required, for the opening-of the padlock; In the formshown, the pin 45 is detachably en a edwith a fork 48" on the free end of an arm 49', fixedto the shaft 36 of the counter; As the shackle is turned, the disengagement of the pin 45 from the fork 48 is preventedby the wall of the socket 41', in case the ring 43 tends to turn with the shack-1e.

The operation of the device will be obvious for the most part from the foregoing description. in the position shown in Figs. 1 and 6, the downward movement of the shackle, incident to the locking thereof, will cause the pin 45'' to be' moved downward, thereby aetuatin'g the arm 49 of the counter and cansing the counter to register the" actuationin an obvious manner. As the arm 48 is moved from the position shown Fig. 6 to that shown in Fig. 7, the unit wheel of the counter will be moved to the extent of one number, as will be seen by comparing Figs. 1 and 2. When the shackle is again released, the spring 46 forces the" pin" 45- upward again, carrying the arm 49 back to its initialhp'osition. T here is no movement of the counter wheels as this takes place, but whenthe shackle is again forced inward, this actuation will be registered in the manner described.

By the construction described, a comparati'velv large nu'niber of counting wheels may be employed. In the example shown,- the counter has five wheels, ermitting 99999 registrations before the instrument is re: turned to 0. Supposing that the padlock is used on a freight car, and a thief succeeds in opening the padlock by means ofa key, or picking tool, the counter wheels'must be returned, when the padlock is closed, to show the initial or original number, if the theft is to remain undetected. Before" the thief opens the adlock, the latter shows, say, the number $35, and-if, after opening, the padlock were closed again by the thief, it would register 736. Hence, if the theft is to remainundetected, the registering mechanism must be actuated a sufiicien t number of times" to raise the number from" 736 to to" 99999, and from 99999" toizero', and then to; 735. Byreason of the long period of time necessary, to effect these, numeroi 1s actua has; it would be imp ssible-' t6 avoid detection."

Supposing th'atth'e parts are iao Various modifications in the details of the device may be adopted within the scope of the invention as defined in the claims.

I do not claim broadly herein the combination of a shackle and registering mechanism actuated directly thereby, or other features broadly claimed in the copending application above identified.

What I claim is 1. In a registering padlock, the combination of a case or shell having an opening at one end and a sight opening in one of its side walls, a shackle secured to said case or shell, lock mechanism cooperating with said shackle within said case or shell, means closing the open end of the shell and confining said lock mechanism therein, a self-contained registering counter in said shell disposed between the wall having said sight opening and a portion of said lock mechanism, said counter including a shackle located in a plane parallel to the plane of the shackle when the shackle is locked by said lock mechanism, number wheels rotatable about said shaft, and a counter case inclosing said wheels but having a sight opening registering with the sight opening of the shell, and means for actuating said counter by the actuation of the padlock; substantially as described.

2. In a padlock, the combination of a case or shell having an open end, a shackle secured to the shell at the opposite end, lock mechanism for said shackle located in said shell, a face or end plate for closing the open end of the shell, and a self-contained registering counter for registering the actuations of the padlock, comprising a counter case held in said shell by means of said face or end plate, and a plurality of number wheels mounted in the counter case and rotatable about a single axis; substantially as described.

3. In a padlock, the combination of a case or shell having an open end, a shackle se cured to said shell at the opposite end, lock mechanism for said shackle in said shell, registering mechanism in said shell operatively connected with said shackle, and a plate for inclosing said lock mechanism and said registering mechanism in said shell, said registering mechanism being constituted by a self-contained registering counter, the case of which is interposed between the lock mechanism and one of the shell walls; substantially as described.

4. In a padlock, the combination of a case or shell open at one end, a shackle secured to said shell at the opposite end, a pin tumbler lock mechanism cooperating with said shackle, and including a face plate rigidly carried by said lock mechanism, and closing said opening of the shell, aself-contained counter comprising a case interposed between said lock mechanism and one wall of said shell, and held in said shell by said face plate, a plurality of number wheels in said counter case rotatable about a single axis, and means for operatively connecting said number wheels with said shackle, substantially as described.

5. In a padlock, the combination of a case or shell open at one end, a shackle secured to the shell at the opposite end, a pin tumbler lock for said shackle located in said shell, a face or end plate for closing the open end of said shell rigidly secured to said pin tumbler lock, the shell having an enlargement at one side, and a self-contained registering counter operatively connected with the shackle and comprising a counter case supported by said face or end plate in the enlargement of the shell in the space between one side face of the pin tumbler lock and the opposing wall of the shell; substantially as described.

6. In a padlock, the combination of a case or shell open at one end, a sliding shackle mounted in the case and projecting out of the other end thereof, pin tumbler lock mechanism in the case for locking and releasing said shackle, said lock mechanism having a face plate closing the openend of the shell, a base'plate held in said shell by said face plate and interposed between said lock mechanism and the opposing wall of the shell, a. counter case mounted on said base plate, a plurality of number wheels in said counter case rotatable about a single axis, said axis located in a plane parallel to the plane of the shackle when the latter is closed or locked, and means for operatively connecting said number wheels with one of the legs of the shackle; substantially as described.

7. In a padlock, the combination of a case or shell, a shackle carried by said case or shell and adapted to slide lengthwise, and also to swing laterally with respect to said shell, a registering counter in the shell comprising a plurality of number wheels rotatable about a single axis, an operating shaft for said wheels, and means for operatively connecting said shaft with said shackle irrespective of the swinging movements of the latter; substantially as described.

8. In a padlock, the combination of a case 01 shell open at one end, a sliding shackle mounted in the shell at the opposite end thereof, said shackle being adapted to swing laterally as well as to slide lengthwise, a pin tumbler lock for said shackle located in said shell, a face or end plate for closing the open end of said shell rigidly secured to said pin tumbler lock, a self-contained counter having a case supported by said face plate between one wall of the shell and the opposing wall of said pin tumbler lock, said counter having a shaft located in a plane parallel to the plane of the shackle when the latter is closed, and means for operatively connecting said shaft with said shackle irrespective of the swinging movements of the shackle; substantially as decrib 9. In a padlock, the combination of a case or shell having a wall with a recess therein,

registering mechanism located in said recess, lock mechanism, a shackle controlled thereby, a cover plate for said registering mechanism, and a plate closing the padlock case at one end and preventing displacement of said cover; substantially as described.

10.-In a padlock, the combination of a case or shell open at one end, a shackle secured to-the shell at the opposite end, a pin tumbler lock located in said shell, a face plate for closing the open end of said shell rigidly secured to said pin tumbler lock and projecting laterally therefrom, a registering counter having a base supported by the laterally projecting portion of said face plate and housed in an enlarged portion of said case or shell between one wall of said case or shell and the opposing wall of said pin tumbler lock, said counter including a plurality of number wheels rotatable about an axis which is disposed in a plane parallel to the plane of said shackle when the padlock is closed, and means for operating said counter by the actuation of the padlock; substantially as described.

11. In a padlock, the combination of a case having an opening in one of its side @apies of this patent may be obtained for five cents each, by addressigg the Commissioner of Iaten tg.

wa ls, st i g mechani m in: d op ing, a cover for said open ng hav ng 1nterlocklng sliding engagement with the slde edges of the latter, and a face plate for the padlock case overlying one edge of said .coverand preventing displacement of the tially as described. n 1

12. In a padlock, the combination of a latter relatively to said opening; substantumbler lock for said shackle located in said shell, a face plate for closing the open end of said shell rigidly secured to said pin tumbler lock and projecting laterally there from, a self-contained registering counter sight openings through which said number wheels are visible; substantially as de scribed.

Inwitness whereof, I have hereunto set my hand on the 26th day of March, 1914;.

EVAN J. SHIPMAN.

WVitnesses:

R. C. TERRELL, W. J. BELL.

W i on, Q?

case or shell open at one end, a-shackle secured to the shell at the opposite end, a pin 

